https://www.rik-kisnah.ai/tags/iot/Recent content in IoT on Rik Kisnah - BlogHugoenTue, 23 Jun 2026 09:00:00 -0700https://www.rik-kisnah.ai/teach/systems/design-a-device-alerting-system/Tue, 23 Jun 2026 09:00:00 -0700https://www.rik-kisnah.ai/teach/systems/design-a-device-alerting-system/Ten thousand devices on bad links, each able to hold six hours of numbers, and people who want a text message when a number crosses a line. The design is a pipeline you already know. The interview is about what happens to data that arrives five hours late.